Bandwidth management on a hybrid point to point broadcast

H - Electricity – 04 – N

Patent

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Details

H04N 7/173 (2006.01) H04N 7/16 (2006.01)

Patent

CA 2369649

A system and method implemented in an interactive television system for managing transmission of data over broadcast and point-to-point channels. In one embodiment, the system comprises a broadcast station (10), a plurality of receiving stations (20), a broadcast channel through which data can be transmitted from the broadcast station to the receiving stations, and a plurality of point-to-point channels (13), each of which is between a corresponding one of the receiving stations and the broadcast station. The broadcast station monitors the demand for particular pieces of information and determines whether the information should be delivered via the broadcast channel or the point-to-point channels. Higher-demand pieces of information are broadcast cyclically over the broadcast channel, while lower-demand information is transmitted over the point-to-point channels.

L'invention concerne un système et un procédé mis en oeuvre dans un dispositif télévisuel interactif pour gérer l'émission de données sur des canaux de télédiffusion et de point à point. Dans un mode de réalisation, le système comprend une station (10) de télédiffusion, plusieurs stations (20) de réception, un canal de télédiffusion par lequel on peut émettre des données de la station de diffusion vers les stations de réception, et plusieurs canaux (13) point à point, chacun situé entre la station de réception correspondante et la station de télédiffusion. Cette dernière surveille la demande d'éléments d'information particuliers et détermine s'il y a lieu de les livrer par le canal de télédiffusion ou par les canaux point à point. Les éléments d'information très demandés sont télédiffusés de façon cyclique sur le canal de télédiffusion, et ceux qui sont moins demandés sont émis sur les canaux point à point.

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